Chemistry Question Bank

In the following sequence of reaction, H O LiAlH KCN CH Br A B C, -> -> -> C is (CBSE AIPMT 2012)

In the replacement reaction The reaction will be most favourable if M happens to be (AIPMT 2012)

KOH alcohol CH CH CH Br CH CH CH -> The above reaction is an example of …… reaction. (OJEE 2011)

Which of the following alkyl halides is hydrolysed by SN2 mechanism? (BVP 2011) (a) C H CH Br (b) CH Br (c) CH CHCH Br

Following is the substitution reaction in which –CN replaced –Cl (Alcoholic) R Cl KCN R CN KCl -> To obtain propanenitrile, R-Cl should be (KCET 2011)

Which one of the following is not true for the hydrolysis of t-butyl bromide with aqueous NaOH? (KCET 2011)

Given reaction, ‘Y’ in the reaction is (DUMET 2011)

Light C H Cl C H Cl HCl -> is an example of

Consider the following groups (I) — OCOCH3 (II) — OCH3 (III) — OSO2CH3 (IV) — OSO2CF3 The decreasing order of their leaving ability is

Among these nucleophiles, which of the following orders is correct for their nucleophilicity order in gas phase? - CH , NH , OH ,F (a) - CH >NH >OH >F (b) F OH NH CH (c) - OH >NH >F >CH

Θ Θ Θ Θ C H , N H ,O H,F Among these nucleophiles, which of the following orders is correct for their nucleophilicity in acetone? (a) Θ Θ Θ Θ CH N H O H> F (b) F OH NH CH (c) Θ Θ Θ Θ O H> N H F CH

Consider the reactions. (i) C H OH CH CH CH Br CH CH CH OC H HBr -> (ii) C H O CH CH CH Br CH CH CH OC H HBr -> The mechanisms of reactions (i) and (ii) are respectively …

Which one is most reactive towards SN1 reaction? (AIPMT 2011)

Identify Z, in the following series. Br alc.KOH KCN C H I X Y Z -> -> -> (VMMC 2010) (a) CH CH CN (b) NCCH CH CN (c) BrCH CH CN

The reactivities of CH Cl,CH CH CH Cl and C H Cl are in the order (CMC 2010) (a) CH Cl CH CH Cl C H Cl (b) CH CH CH Cl CH Cl C H Cl (c) C H Cl CH CH CH Cl CH Cl (d) CH Cl C H Cl CH CH C…

Reaction of methyl bromide with aqueous sodium hydroxide involves (KCET 2010)

KMnO /H aq.KOH CH CH Br A -> -> NH Br alkali B C D, -> -> D is (KCET 2010) (a) CH Br (b) CH CONH (c) CH NH (d) CHBr

The reaction, Dryether RX 2Na RX R R 2NaX -> is called (Hayana PMT 2010)

iso-propyl bromide on Wurtz reaction gives (RPMT 2010)

In the following reaction + 1. Mg, Ether 2. H O , C H CH Br X -> is (AIPMT 2010)

Θ Θ Θ F, ,Br, I Cl Among these nucleophiles, which of the following orders is correct for their nucleophilicity order in DMF? (a) Θ Θ Θ F> >Br>I Cl (b) Θ Θ Θ Θ I>Br> >F Cl (c) Θ Θ Θ Θ I>Br>F>Cl

Major (Excess) CH CH NH CH I P -> P should be

Among the following alkyl halides, choose the one with the lowest boiling point.

Which of the following has the highest normal boiling point?

Which of the following represents the correct order of densities?